摘要
应用PHREEQCI模拟软件,对我国某高矿化度地下水的铀矿地浸溶浸剂进行模拟,通过计算饱和指数和表观饱和指数,确定溶质水解沉淀的水文地球化学条件的临界值。采用混合淡化高矿化度地下水的方法,可以使石膏饱和指数降为负值,高矿化度地下水与当地淡水最佳体积比为1∶4。充入CO2气体能使碳酸盐饱和指数也降低为负值。
Lixiviant for in-situ leaching uranium of a uranium mine containing high salinity groundwater is simulated by applying hydro-geochemical simulation software PHREEQCI. After saturation index and apparent saturation index are calculated, the hydro-geochemical critical value of solute hydrolytic precipitation is determined. The saturation index of gypsum is decreased to less 1.0 by mixing and desalting of the high salinity groundwater. The optimal volume ratio of the high salinity groundwater to local freshwater is 1 ： 4. pH value is decreased by addition of CO2 ; thus, the saturation index of carbonate can be lowered to a negative value.
出处
《铀矿冶》
CAS
北大核心
2007年第1期15-18,共4页
Uranium Mining and Metallurgy
关键词
水文地球化学模式
饱和指数
表观饱和指数
hydro-geochemical simulation
saturation index
apparent saturation index
